Spike-machine.



G. BARR.

v SPIKE MACHINE.

APPLICATION FILED IEB.8, 1907. 1,024,666. Patented Apr. 30, 1912.

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Patented Apr. 30, 1912.

2 SHEETS-SHEET 2.,

G. BARR.

SPIKE MACHINE.

APPLICATION rum) P113. 9, 1907.

I 1 l I r r COLUMBIA PLANuuuAPn 130., wAsmNn'rON. D. c.

UNITED STATES PATENT OFFICE.

GEORGE BARR, OF PITTSBURGH, PENNSYLVANIA.

SPIKE-MACHINE. A

To all whom it may concern:

Be it known that I, GEORGE BARR, a citizen of the United States, and aresident of Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inSpike- Machines, of which the following is a clear, full, and exactdescription.

My invention relates to spike machines, and its objects are, first, toautomatically gage the length of the spike-blank by means that interceptthe advancing billet from which said blank is made; second, to withdrawsaid means in such manner that the position of the blank will not bedisturbed as the blank-gripping or holding devices advance to theirwork; third, to provide novel heading mechanism which has a headingdieremovably and adjustably secured therein and has a slight downward aswell as forward movement While heading the spike, and fourth, to providesuitable ejecting mechanism, substantially as hereinafter fullydescribed and as particularly pointed out in the claims.

In the drawings :Figure 1 is a plan view of my invention. Fig. 2 is atransverse vertical section taken on dotted line 2, 2, Fig. 1. Fig. 3 isa detail view showing the spikeblank gaging mechanism and elementscooperating therewith, in perspective.

Referring to the drawings, A represents two intermittently revolvingdisks that are adapted to carry a set of dies (not shown), and eachhaving a circumferential flange projecting from one edge thereof thatlaps past the edge of the other. The metal billet is fed to the machinebetween these disks and is cut into suitable lengths in such manner thatthe rear end of each spike-blank, so made, is sharpened. Thespike-blank, as it is moved forward by disks A, A, is caught by, andmoved forward onto the fiat top of an anvil or die B, by feed rollers a,a. Then the proper devices (not shown) cut the spike-blank they .ceaserevolving, but the feed-rollers continue to revolve and move the blankforward until the advanced end thereof overhangs the opposite edge ofthe anvil, and until it comes in contact with a stop-gage O, whereuponthe set 72, extending vertically downward from the adjacent end of thegripping-lever D, is made to bear upon the spike-blank and hold itrigidly in Specification of Letters Patent.

Application filed February 8, 1907.

Patented Apr. 30, 1912.

Serial No. 356,418.

position while the spikeblank is being headed. Upon the withdrawal ofthe heading-device a vertically reciprocable ejector E, consisting of arod of suitable diameter whose upper end extends through a verticalopening in the anvil, moves upward and lifts the finished spike from theanvil, and then, laterally reciprocable horizontal pushbars F, F,located so as to impinge against the finished spike near its rearpointed end and near its head, push the spike laterally off the anvil.

The cutting disks A, A, the feed rollers a, a, the ejector-rod E, andthe push-bars F, F, are all old, and fully shown and described inLetters Patent of the United States granted to me February 9, 1897 forspike machines, No. 57 6,536, and I do not wish to be understood asclaiming any novelty in these features of the machine. The use of agage-bar, and gripping-devices, and heading dies in a spike-machine arealso old, as fully shown and described in the aforesaid Letters Patent,but the novelty of the invention herein resides in the improvedconstruction and operation of these last mentioned features.

The disks A, A, are mounted upon parallel transverse shafts A, A, whichare arranged one above the other and are journaled in suitable bearingssecured to and arising from the bed 2 of the machine. At one end of themachine these shafts A, A, are connected by gearing 3, the uppermost oneof which is engaged by a suitable pawl 4, pivotally connected to theadjacent end of a pitman 5, which latter has its opposite end connectedto a crank-pin projecting from a disk 6 secured to the adjacent end of adrive-shaft 7. This drive-shaft 7 we tends transversely across the sideof the machine opposite shafts A, and is journaled in bearings 8, 9, 10and 11 secured to and arising from bed 2 of the machine. Between thebearings 8 and 9 a cam 12 is secured to the drive-shaft, which consistsof a suitable cylindrical boss having a runway which is made by parallelflanges, that at asuitable point, are deflected laterally, substantiallyas shown in Fig. 1 of the drawings. A horizontally disposed lever 13,which is fulcrumed mediate its ends to a suitable support arising fromthe bed of the machine, has one end inserted and engaged by the runwayof this cam 12, and the opposite end portion of said lever is bentdownward.

Alongside of the cam 12, and between the same and bearing 9, another cam1 1 is mounted on the drive-shaft, which consists of a cylindrical bosshaving a runway made by circumferential flanges, a portion of whichgiven a lateral offset. The horizontal lever 15, which is fulcrumed tothe same support that lever 13 is fulcrumed to, has its adjacent endenter and engage the runway of this cam l l, so that as the latterrevolves said lever is given a slight reciprocable movement on itsfulcrum of greater duration than that possessed by lever 13. The endportion of lever 15 farthest from cam 1st is deflected laterally overthe downwardly bent portion. of lever 13, and is likewise bent downward,and has its extremity connected by means of a suitable pivotal pin orbolt to the transversely reciprocable horizontal gagebar C. The end ofthe gagebar farthest from the path of the spikeblank is guided insuitable guidebearings 1G, and the end portion thereof nearest the pathof said blank is guided in guidebearings 17. The width of the guide-openin 's in these bearings is greater than the width of the gage-bar. andbearings 17, on the side facing the drive-shaft, is provided with aset-screw 18, by means of which the adjacent end portion of the gagebarmay be adjusted nearer to or farther from the anvil, so as to exactlygage and determine the extent the spike-blank shall extend beyond theanvil. Near the opposite end of the gage bar it is provided with alateral offset 1?), the end of which next the bearing 16 is beveled. Thegage-bar is held in engagement with the end of the set-screw 18, andwith the side of the opening of bearing 16 nearest the drive-shaft, by acoil spring 20, and the opening in the adjacent end of the lever 15through which the pivotal pin passes. which connects the same to the barC. is elongated in the direction of the length of said lever. As shownin Fig. 1 of the drawing gage-bar C is in position to stop the advanceof the spike-blank. When it has done this, it is moved longitudinally bylever 15 out of the path of said spikeblank, and, as it is thus moved,offset 19, entering the guide-opening in bearing 16, gives said bar aslight rocking movement, which causes the bar to move, on the end of theset-screw 18 as a pivot, so that the opposite end thereof, in front ofthe blank, moves laterally and longitudinally away from th adjacent endthereof and thus avoids the possibility of disturbing its positionbefore it is thoroughly clamped upon the anvil by the gripping devices.

The fulcrum of the gripping lever D consists of a heavy crank-shaft 21,the portion from which the two branches of the lever projectcorresponding to the wrist-pin and the arms at the ends of which extendclownward and have laterally projecting alining trunnions or journals,which are mounted in suitable bearings secured to and arising from thebed of the machine. The branch of the lever D, in which set Z) issecured, is of an inverted L-shape, and projects from crankshaft- 21 inthe same vertical plane as the path. of the spike-blank. The otherbranch of said lever, however, projects from the end of the wrist-pinportion of the shaft farthest from levers 13 and 15, and extend upwardand rearward over the drive-shaft, where its under surface is faced by asuitable shoe 22, which is engaged by a cam 23. Cam 23 consists simplyof a disk secured eccentrically to the drive-shaft, and it provides justsufficient movement to enable the set Z) to engage and clamp thespike-blank, and to move out of the way when said blank is ejected. inorder to hold levu' D in engagement with said cam 23, I connect theextremity of its rearward longer branch to the bed of the machine, by acoil-spring 24,

in any suitable manner.

The heading-die G is a suitable bar of steel having a concaved engagingend for forming the head of the spike. This die is secured in a groovein the inclined shoulder (Z supported by a bracket projecting forwardfrom the vertically disposed frame H, the lower end of which latter ismounted 011 a transverse shaft 0, whose ends are journaled in blocks f,seated in longitudinally elongated openings in the lower ends ofdropframes 34, depending from the underside of the bed of the machine.The die G is so located that its engaging end is opposite the end. ofthe spike-blank. when the latter is held upon the anvil, and the upperend of the frame H is pivotally connected to a link 25, which extendsbackward therefrom and is pivotally connected to the wrist pinconnecting two circular plates constituting part of a crank on thedrive-shaft, located between bearings 9 and 10. The action of the frameH and link 25 is such, that the heading-die G, when it engages theoverhanging advanced end of the spikeblank will travel on a segment of acircle struck from the center of shaft 6, and has both a bending andupsetting action upon the end of the spike while heading the same,without exposing the blank to a direct longitudinal thrust, which notonly subjects the heading mechanism to a great strain, buthas a tendencyto spread the head on both sides of the spike, which it is the object ofmy invention to practically avoid doing.

In operation the gripping jaws clamp the stock after the latter has beensl eared the proper length by the cutting dies cooperating with thegage, and while thus engaged the heading lever moves forward against theend of the cut stock and heads the spike. The movement of this lever isin a true are struck from its pivotal point and at the moment of releasethe gripper is raised upward slightly and then rearwardly owing to theeccentric pivot of the lever on which the gripper is mounted, therebypermitting the jaws of the latter to escape the header as it moves awayfrom the spike. The various parts forming the same, however, may bemodified or changed in construction, so long as the operation thereof issubstantially as hereinbefore described, without departing from thespirit of my invention.

What I claim as new is 1. In a spike-machine the combination with adrive-shaft, a rock-shaft, a grippingmember and sets mounted on saidrock-shaft and bodily reciprocable to and from the work in an arc of acircle struck from the pivot of said rockshaft, of an unjointedheadinglever integral throughout its length adapted to bodily rock toand from the work, said lever actuated direct from said drive-shaft-.

2. In a spike-machine the combination with a suitable frame, adrive-shaft, a rockshaft, an anvil, and a gripping member and setsmounted on said rock-shaft and bodily reciprocable to and from the anvilin an arc of a circle struck from the pivot of said rock shaft, of anunjointed heading lever integral throughout its length adapted to bodilyrock to and from the work, said lever actuated direct from saiddrive-shaft.

3. In a spike-machine the combination with a drive-shaft, a rock-shaft,a grippingmember and sets mounted on said rock-shaft and bodilyreciprocable to and from the work in an arc of a circle struck from thepivot of said rock-shaft, an unjoint-ed heading-lever integralthroughout its length, and a pitman having one end connected to saidheader and its opposite end connected to said drive-shaft and adapted tobodily rock said header to and from the work.

4. A spike machine comprising means for feeding the spike blankslongitudinally into the machine, heading devices, a transversehorizontally disposed gage-bar reciprocable in a fixed plane whichdetermines the extent of the initial movement of the blank before it isoperated on by the heading devices, guide-bearings for said bar neareach end thereof having guide-openings that are wider than said bar,means for keeping said bar normally against one side of said bearing, aset-screw in the bearing nearest the path of said spike-blank and havingengagement with said gage-bar, and means for reciprocating said bar.

5. A spike machine comprising means for feeding the spike blankslongitudinally into the machine, heading devices, a gage-barreciprocable in a fixed plane which determines the extent of the initialmovement of the blank before it is operated on by the heading devicessaid gage-bar having a lateral offset near the end thereof farthest fromsaid blank, guide-bearings for said gage-bar near each end thereofhaving guide-openings that are wider than said bar, means for keepingsaid bar normally against one side of said bearing, a set-screw tappedinto said bearing nearest the path of the spike blank and havingengagement with he bar, and means for reciprocating said I11 testimonywhereof I have hereunto set my hand and seal this 29th day of January,1907.

GEORGE BARR. [1 s.]

Witnesses:

WM. S. WEsTMAN, O. B. AYLEswoRTH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Iatents,

Washington, D. 0. i

